Beta & Low Energy Gamma Detector - Model 44-21
CE Seal
Specifications

INDICATED USE: beta, low-energy gamma detection
COMPATIBLE INSTRUMENTS: general purpose survey meters, ratemeters and scalers
DETECTOR TYPE: scintillator, 2.54 cm (1 in.) diameter x 1 mm thick Nal adhered to a 0.03 cm (0.01 in.) thick plastic scintillator
WINDOW: 3.4 mg/cm²
WINDOW AREA: 5.1 cm² active and open
NON-UNIFORMITY: less than 10%
EFFICIENCY (4π): 38% for 125I; 19% for 129I; 4% for 14C; 28% for 32P
BACKGROUND (10 µR/hr): 450 cpm
ENERGY REPONSE: energy dependent
PHOTOMULTIPLIER TUBE: 3.8 cm (1.5 in.) diameter
OPERATING VOLTAGE: typically 500 to 1200 volts
CONNECTOR: series "C", other types available
SIZE: 5.1 x 18.5 cm (2 x 7.3 in.) (Dia x L), with connector cap
WEIGHT: 0.5 kg (1 lb)